Chapter 1 - Number Systems Excercise Ex. 1.1 Solution 1 Yes zero is a rational number as it can be represented in the form, where p and q are integers and q 0 as etc. Concept Insight: Key idea to answer this question is "every integer is a rational number and zero is a non negative integer". Also 0 can be expressed in form in various ways as 0 divided by any number is 0. simplest is . Solution 2 There are infinite rational numbers in between 3 and 4. 3 and 4 can be represented as respectively. Now rational numbers between 3 and 4 are Concept Insight: Since there are infinite number of rational numbers between any two numbers so the answer is not unique here. The trick is to convert the number to equivalent form by multiplying and dividing by the number atleast 1 more than the rational numbers to be inserted. Solution 3 There are infinite rationa...